1. AdenomyosisAdenomyosis happens most likely in the late of woman life and who has had several pregnancy. It is classified as a medical condition of endometrial cell grows within the muscular walls of the uterus causing symptoms similar to those of endometriosis. It may interferes with the embryo implantation if the uterine tissue extends through entire region of the uterine wall resulting in miscarriage.
2. Congenital adrenal hyperplasia
As a genetic passing through condition, congenital adrenal hyperplasia is present at birth and can affect both boy and girl alike. It is caused the lack an enzyme which is vital for the adrenal gland to make the hormones cortisol and aldosterone resulting in higher than normal testosterone hormone in the body. While girl is born with muscular appearance with high levels of testosterone hormone, it leads to abnormal menstrual period and causing infertility. The disease may be difficult to diagnosis in boy, but it may interfere with the growth and normal function of the reproductive organ including the test and penis leading to infertility.
3. Alcohol
Moderate drinking helps to improve blood circulation to the reproductive organ leading to increase the chance of fertility of men and women alike. Excessive drinking in women may increase the production of hormone prolactin which interferes which the ovulation leading to infertility. In men, alcohol interferes with production of testosterone leading low quality of sperm and sexual desire causing male infertility.
4. Anabolic steriods
Anabolis steriods are steroid hormones related to the hormone testosterone. They help enhance the muscular appearance and physical performance causing shrinking of testicle and lower the production of sperm leading to infertility in men. IN women, it increase the levels of testosterone leading to abnormal function of the reproductive system in managing menstrual cycle including decline in serum levels of LH, FSH, estrogens and progesterone, leading to infertility.
5. Androgens
Androgen is also an steroid hormone which helps to control the development and maintenance of masculine characteristics. In women, it is necessary in estrogen synthesis, increasing sexual desire and preventing of bone loss, as well as sexual desire and satisfaction, over production of androgen causes male like pattern, irregular menstrual cycle or absence of menstrual cycle leading to infertility. In Men, over production androgen by test causes lower quality of sperm and sperm production leading to male infertility.
6. Anejaculation
Anejaculation is a medical condition and defined as inability to ejaculate. It is caused by physical and psychological problem including sexually frigid, pharmacological inhibition, retrograde ejaculation and nervous system malfunction resulting in infertility.
7. Antisperm antibody
Antibody is an chemical made by our body to helps the immune system to identify the froreign invasion such as bacteria and virus. In case of antisperm antibody, the immue system attacks fetus and the sperm which interferes the sperm quality, movement and sperm cervical invasion resulting in increasing the risk of infertility for women and men alike.
8. Asherman's syndrome
Asherman's syndrome is a condition characterized by the presence of scars within the uterine cavity. It is caused by scars after a D&C is performed on a recently pregnant uterus including a missed or incomplete miscarriage, birth, or elective termination in removing retained products of conception and placental remains causing endometrium inability to response to the estrogen during menstrual cycle leading to infertility.
9. Aspirin overdose
Small dose helps to increase infertility in women by increasing the coagulant effects and decreasing the risk of antibody attacking the fetus. Over dose of aspirin damage the kidney function in regulating the reproductive system resulting in sexual libido and increasing the risk of infertility both men and women alike according to traditional Chinese medicine.
10. Azoospermia
Azoospermia is the medical condition of a male not having any measurable level of sperm in his semen caused by blocking of the reproductive tract including blocking of the epididymis, seminal vesicles and ejaculation ducts resulting in infertility.